高电压技术2011，Vol.37Issue(7)：1598-1605,8.
亲水性时绝缘子交流污闪模型的影响因素
Influencing Factors of AC Pollution Flashover Model of Hydrophilic Insulator
摘要
Abstract
To research the influences of various reasons on the alternating current （AC） pollution flashover voltage of hydrophilic insulator, calculation formulas for residual pollution layer resistance in consideration of arc root radius or neglecting of arc root radius were used, and the Obenaus model was used to calculate the pollution flashover voltage. Moreover, the effectiveness of the model was confirmed by the experimental results of artificial pollution. Mean while, the influences of the creepage distance, salt deposit density （SDD）, equivalent diameter, arc parameter, air arc length and arc restoration condition on the AC pollution flashover voltage of hydrophilic insulator were studied. The results indicate that： the pollution flashover voltage will decrease with the increase of equivalent diameter as power function; the pollution flashover voltage will increase with the increase of the arc parameter A as power func- tion; the pollution flashover voltage will linearly decrease with the increase of the arc parameter n, but the changed value is very small; the pollution flashover voltage will linearly decrease with the increase of the air arc length, but the changed value is very small; if the arc floating makes equivalent creepage distance longer, the pollution flashover voltage will nearly linear increase with the creepage distance, otherwise the pollution flashover voltage will nearly linearly decrease with the creepage distance; the arc restoration condition has an obvious influence on the pollution flashover voltage calculated by the Obenaus model. U= 1050X/I is accurate according to the calculation result of the paper.关键词
绝缘子/交流（AC）/污闪电压/Obenaus模型/影响因素/亲水性Key words
insulator/alternating current （AC）/pollution flashover voltage/Obenaus model/influencing factors/hydrophilicity分类
信息技术与安全科学引用本文复制引用
徐志钮,律方成,刘云鹏,李和明..亲水性时绝缘子交流污闪模型的影响因素[J].高电压技术,2011,37(7):1598-1605,8.基金项目
国家自然科学基金 （）
教育部霍英东教育基金基础性研究课题 （）
中央高校基本科研业务费专项资金（11MG42）. （）
